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(parent: 075dd4a) | patch
cgroup: fix lockdep warning in debug controller
authorTejun Heo <tj@kernel.org>
Wed, 14 Jun 2017 20:01:41 +0000 (16:01 -0400)
committerTejun Heo <tj@kernel.org>
Wed, 14 Jun 2017 20:01:41 +0000 (16:01 -0400)
commit4decb726b16ef187e3c10b31b4766d6aa0693d4c
tree5f45453c0f4675950f56ee4ef1fdb16057eb6552tree | snapshot
parent075dd4ade2df0acd28fd3c24f443039aba71649dcommit | diff
cgroup: fix lockdep warning in debug controller

The debug controller grabs cgroup_mutex from interface file show
functions which can deadlock and triggers lockdep warnings.  Fix it by
using cgroup_kn_lock_live()/cgroup_kn_unlock() instead.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Waiman Long <longman@redhat.com>
kernel/cgroup/debug.c diff | blob | history
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